Combine water and sugars in 3-¾ non reactive (stainless, ceramic or glass) saucepan and place over medium heat. Stir until the sugar dissolves. Whisk in the cocoa, the ground Ibarra chocolate and ground chipotle pepper and bring the mixture to a simmer. Simmer for 2 minutes, whisking constantly. Remove from heat and transfer to medium bowl. Stir in vanilla and chill in refrigerator 2 hours.

Stir chilled mixture. Add to freezer bowl of ice cream maker and follow the instructions. With the Cuisinart model, let mix til thickened, about 30 minutes.Add the crystallized ginger and let it mix in thoroughly.

The sorbet has a soft creamy texture. If a firmer consistency is desired, transfer sorbet to airtight container and place in freezer for 2 hours or more. Best done day ahead.